Secondary/Configurable Control Schematic Icons
Secondary/Configurable Control Schematic Icons Icon Icon Definition CAUTION: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR DISABLING AND ENABLING . Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs
Scheme 1
Scheme 2
| Callout | Component Name |
|---|---|
| 1 | Instrument Panel Cluster (IPC) |
| 2 | Windshield Wiper/Washer Switch |
| 3 | I/P Dimmer Control |
| 4 | Hazard Switch |
| 5 | Inflatable Restraint Front Passenger Presence System (PPS) Indicator |
| 6 | Fog Lamp (T96) or Traction Control Switch (NW9) |
| 7 | Ambient Light Sensor |
| 8 | Inflatable Restraint I/P Module |
| 9 | HVAC Control Module |
| 10 | Cigar Lighter (DT4) |
| 11 | Window Switch - Passenger |
| 12 | Heated Seat Switches |
| 13 | Window Switch - Driver |
| 14 | Outside Rearview Mirror Switch (D22/DG7) |
| 15 | Radio |
| 16 | Steering Wheel Control Switch - Right (Radio) |
| 17 | Inflatable Restraint Steering Wheel Module |
| 18 | Steering Wheel Control Switch - Left (Cruise Control) |
| 19 | Turn Signal/Multifunction Switch |
Scheme 3
| Connector Part Information OEM: 50-57-9407 Service: See Catalog Description: 7-Way F (BK) |
Steering Wheel Control Switch - Left Connector Parts Information
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | Not Used | ||
| 2 | L-GN | 397 | Cruise On/Off Switch Signal |
| 3 | GY | 8 | I/P Lamps Supply Voltage |
| 4 | PK | 1339 | Ignition 1 Voltage |
| 5 | YE | 87 | Cruise Resume/Accel Switch Signal |
| 6 | BK/WH | 84 | Cruise Set/Coast Switch Signal |
| 7 | BK | 151 | Ground |
Steering Wheel Control Switch - Left Connector Terminal Identification
Scheme 4
| Connector Part Information OEM: 50-57-9404 Service: See Catalog Description: 4-Way F (BK) |
Steering Wheel Control Switch - Right Connector Parts Information
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | BK | 151 | Ground |
| 2 | BK/WH | 644 | 10-Volt Reference |
| 3 | GY | 8 | I/P Lamps Supply Voltage |
| 4 | D-BU | 1796 | Remote Radio Control Supply Voltage |
Steering Wheel Control Switch - Right Connector Terminal Identification
Begin the system diagnosis with the Diagnostic System Check - Vehicle . The Diagnostic System Check - Vehicle will provide the following information
- The identification of the control modules which command the system
- The ability of the control modules to communicate through the serial data circuit
- The identification of any stored DTCs and their status
The use of the Diagnostic System Check - Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.
| IMPORTANT | Perform the Diagnostic System Check - Vehicle before using the Symptom Tables in order to verify that all of the following conditions are true: There are no DTCs set. The control modules can communicate via the serial data link. Review the system operation in order to familiarize yourself with the system functions. Refer to Steering Wheel Controls Description and Operation . |
Circuit/System Description
The radio supplies voltage to the audio steering wheel control momentary contact switches, and monitors the return signal. Each switch is associated to a set resistance value, when pressed a specific voltage drop occurs through a series of resistors unique to that switch. The radio then identifies the selection to activate the feature, otherwise sends a serial data message received by the controlled component activating the feature.
Personalization Description and Operation
Personalization features may be set for the vehicle or the driver. Vehicle features do not change with each driver.
For more information on vehicle personalization features for this vehicle, refer to Vehicle Personalization .
Steering Wheel Controls Description and Operation
The audio steering wheel control switches duplicate the function of the primary controls of the associated component, through a network of multiple momentary contact switches and a series of resistors. The radio supplies voltage to the switches and monitors the return signal for a specific voltage drop to occur unique to the one pressed. The radio then identifies the switch selected to activate the feature, otherwise sends a serial data message that is received by the component controlled, activating the feature.
This section is intended to diagnosis the circuits between the radio and the audio steering wheel control switches. If the primary control for the device is inoperative, refer to the appropriate section for the component the steering wheel control switch is functioning.
CTD Operation
Refer to Content Theft Deterrent (CTD) Description and Operation for information.
Door Lock Operation
Automatic Door Lock and Automatic Door Unlock can be configured with the Tech 2. Refer to Power Door Locks Description and Operation for more information.